Magnets and Magnetism

Question 1

Two bar magnets are labeled A and B. The ends of each magnet are numbered 1 or 2, but the poles are not labeled. When A1 is brought near B1, the bars repel.

Revolt · Accepted Answer

A1 and B1 are like poles, but there is not enough information to tell whether they are north poles or south poles.

Question 2

The north pole of a strong magnet is dragged down an iron nail from the top to the point 50 times.

Revolt · Accepted Answer

The nail will pick up some paper clips because its domains have been aligned.

Question 3

Before beginning an experiment, Mrs. Wilson warns her science class not to drop the bar magnets on the floor.

Revolt · Accepted Answer

The magnet might lose its magnetism.

Question 4

fieldspolesdomainscurrents

Revolt · Accepted Answer

poles

Question 5

The presence of which magnetic feature best explains why a magnet can act at a distance on other magnets or on objects containing certain metals?

Revolt · Accepted Answer

fields

Question 6

Barton conducts an experiment using three metallic bars that might be magnets. The bars are labeled A, B, and C. The ends of each bar are numbered 1 or 2.He places the end of one bar close to an end of a second bar and records his results in the table shown.Based on the data, which prediction should he expect to occur?

Revolt · Accepted Answer

C2 attracts B2.

Question 7

Pairs of magnets are shown in the diagram.

Revolt · Accepted Answer

X

Question 8

A magnetically soft material is placed in a strong magnetic field.

Revolt · Accepted Answer

It will become a temporary magnet because the domains will easily realign.

Question 9

This diagram shows the magnetic field lines near the ends of two magnets. There is an error in the diagram.

Revolt · Accepted Answer

changing the S to N

Question 10

The diagram shows two bar magnets. They are cut along the dashed line, and then the two marked ends are placed near each other.

Revolt · Accepted Answer

The pieces will repel because the cut end of the top magnet is a south pole.

Magnets and Magnetism Answers

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